“And further, observing that all this indeterminate substance is in motion, and that no true predication can be made of that which changes, they supposed that it is impossible to make any true statement about that which is in all ways and entirely changeable. For it was from this supposition that there blossomed forth the most extreme view of those which we have mentioned, that of the professed followers of Heraclitus, and such as Cratylus held, who ended by thinking that one need not say anything, and only moved his finger; and who criticized Heraclitus for saying that one cannot enter the same river twice, for he himself held that it cannot be done even once.”

“Impossible, I realize, to enter another’s solitude. If it is true that we can ever come to know another human being, even to a small degree, it is only to the extent that he is willing to make himself known. A man will say: I am cold. Or else he will say nothing, and we will see him shivering. Either way, we will know that he is cold. But what of the man who says nothing and does not shiver? Where all is intractable, here all is hermetic and evasive, one can do no more than observe. But whether one can make sense of what he observes is another matter entirely”

“Five hundred years before Christ was born, the Greek philosopher Heraclitus told his students that "everything changes except the law of change". He said: "You cannot step in the same river twice." The river changes every second; and so does the man who stepped in it. Life is a ceaseless change. The only certainty is today. Why mar the beauty of living today by trying to solve the problems of a future that is shrouded in ceaseless change and uncertainty-a future that no one can possibly foretell?”

“Stepan Arkadyevitch took in and read a liberal paper, not an extreme one, but one advocating the views held by the majority. And in spite of the fact that science, art, and politics had no special interest for him, he firmly held those views on all these subjects which were held by the majority and by his paper, and he only changed them when the majority changed them—or, more strictly speaking, he did not change them, but they imperceptibly changed of themselves within him.”

“Pure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then such and such another proposition is true of that thing. It is essential not to discuss whether the first proposition is really true, and not to mention what the anything is, of which it is supposed to be true. [...] Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true. People who have been puzzled by the beginnings of mathematics will, I hope, find comfort in this definition, and will probably agree that it is accurate.”

“After all, the wrong is done. It is past and cannot be changed. We have only the present and the future upon which to move forward.”